and it still happens:
Sep 06 18:32:31 systemd-coredump[16539]: Process 15286 (chromium) of user 1000 dumped core.
                                         
                                         Stack trace of thread 15366:
                                         #0  0x000055dd3add464e n/a (chromium)
                                         #1  0x00007f0bd66895ef context_get_server_info_callback (libpulse.so.0)
                                         #2  0x00007f0bcd70af3d run_action (libpulsecommon-9.0.so)
                                         #3  0x00007f0bd669501a pa_mainloop_dispatch (libpulse.so.0)
                                         #4  0x00007f0bd66952cf pa_mainloop_iterate (libpulse.so.0)
                                         #5  0x00007f0bd6695390 pa_mainloop_run (libpulse.so.0)
                                         #6  0x00007f0bd66a3fd5 thread (libpulse.so.0)
                                         #7  0x00007f0bcd722da6 internal_thread_func (libpulsecommon-9.0.so)
                                         #8  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #9  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15349:
                                         #0  0x00007f0bdd049afb waitpid (libpthread.so.0)
                                         #1  0x000055dd3bef6f9d n/a (chromium)
                                         #2  0x000055dd3bf164b3 n/a (chromium)
                                         #3  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #4  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15367:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf0b1a8 n/a (chromium)
                                         #2  0x000055dd3bf0b072 n/a (chromium)
                                         #3  0x000055dd3bee200f n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15350:
                                         #0  0x00007f0bd4c72dd3 epoll_wait (libc.so.6)
                                         #1  0x000055dd3bf538c8 n/a (chromium)
                                         #2  0x000055dd3bf51421 n/a (chromium)
                                         #3  0x000055dd3bee2ace n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15322:
                                         #0  0x00007f0bd4c6948d poll (libc.so.6)
                                         #1  0x000055dd3b81ac52 n/a (chromium)
                                         #2  0x000055dd3bf19c07 n/a (chromium)
                                         #3  0x000055dd3bf164b3 n/a (chromium)
                                         #4  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #5  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15363:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf0b19d n/a (chromium)
                                         #3  0x000055dd3bee2005 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15351:
                                         #0  0x00007f0bd4c72dd3 epoll_wait (libc.so.6)
                                         #1  0x000055dd3bf538c8 n/a (chromium)
                                         #2  0x000055dd3bf51421 n/a (chromium)
                                         #3  0x000055dd3bee2ace n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15353:
                                         #0  0x00007f0bd4c6b0b3 __select (libc.so.6)
                                         #1  0x000055dd3becf802 n/a (chromium)
                                         #2  0x000055dd3bf3f7ad n/a (chromium)
                                         #3  0x000055dd3bee0335 n/a (chromium)
                                         #4  0x000055dd3bee0698 n/a (chromium)
                                         #5  0x000055dd3bee0aeb n/a (chromium)
                                         #6  0x000055dd3bee1f8b n/a (chromium)
                                         #7  0x000055dd3befce9e n/a (chromium)
                                         #8  0x000055dd3bf1a57b n/a (chromium)
                                         #9  0x000055dd3bf164b3 n/a (chromium)
                                         #10 0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #11 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15387:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf0b1a8 n/a (chromium)
                                         #2  0x000055dd3bf0b072 n/a (chromium)
                                         #3  0x000055dd3bee200f n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15352:
                                         #0  0x00007f0bdd0491cd read (libpthread.so.0)
                                         #1  0x000055dd3bd92b7f n/a (chromium)
                                         #2  0x000055dd3bf164b3 n/a (chromium)
                                         #3  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #4  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15682:
                                         #0  0x00007f0bd4c72dd3 epoll_wait (libc.so.6)
                                         #1  0x000055dd3bf538c8 n/a (chromium)
                                         #2  0x000055dd3bf51421 n/a (chromium)
                                         #3  0x000055dd3bee2ab6 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15434:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf0b1a8 n/a (chromium)
                                         #2  0x000055dd3bf0b072 n/a (chromium)
                                         #3  0x000055dd3bee200f n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15354:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf1d28d n/a (chromium)
                                         #3  0x000055dd3bf1d68b n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15365:
                                         #0  0x00007f0bcd7097c0 pa_once_begin (libpulsecommon-9.0.so)
                                         #1  0x00007f0bcd70996a pa_run_once (libpulsecommon-9.0.so)
                                         #2  0x00007f0bcd722cc7 pa_thread_self (libpulsecommon-9.0.so)
                                         #3  0x00007f0bd66a47c6 pa_threaded_mainloop_wait (libpulse.so.0)
                                         #4  0x000055dd3add4558 n/a (chromium)
                                         #5  0x000055dd3add2249 n/a (chromium)
                                         #6  0x000055dd3adc46f7 n/a (chromium)
                                         #7  0x000055dd3adc5bfa n/a (chromium)
                                         #8  0x000055dd3bf3f7ad n/a (chromium)
                                         #9  0x000055dd3bee0335 n/a (chromium)
                                         #10 0x000055dd3bee0698 n/a (chromium)
                                         #11 0x000055dd3bee0aeb n/a (chromium)
                                         #12 0x000055dd3bee202a n/a (chromium)
                                         #13 0x000055dd3befce9e n/a (chromium)
                                         #14 0x000055dd3bf1a57b n/a (chromium)
                                         #15 0x000055dd3bf164b3 n/a (chromium)
                                         #16 0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #17 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15640:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf1d28d n/a (chromium)
                                         #3  0x000055dd3bf1d68b n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15356:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf172e2 n/a (chromium)
                                         #3  0x000055dd3bf16b56 n/a (chromium)
                                         #4  0x000055dd3bf19c07 n/a (chromium)
                                         #5  0x000055dd3bf164b3 n/a (chromium)
                                         #6  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #7  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16184:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3cabbba8 n/a (chromium)
                                         #2  0x000055dd3cabbaa6 n/a (chromium)
                                         #3  0x000055dd3cabcc5b n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15357:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf0b19d n/a (chromium)
                                         #3  0x000055dd3bee2005 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3b5f4aa5 n/a (chromium)
                                         #6  0x000055dd3b5f4e71 n/a (chromium)
                                         #7  0x000055dd3bf1a57b n/a (chromium)
                                         #8  0x000055dd3bf164b3 n/a (chromium)
                                         #9  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #10 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15358:
                                         #0  0x00007f0bd4c72dd3 epoll_wait (libc.so.6)
                                         #1  0x000055dd3bf538c8 n/a (chromium)
                                         #2  0x000055dd3bf51421 n/a (chromium)
                                         #3  0x000055dd3bee2ab6 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3b5f4b25 n/a (chromium)
                                         #6  0x000055dd3b5f4e81 n/a (chromium)
                                         #7  0x000055dd3bf1a57b n/a (chromium)
                                         #8  0x000055dd3bf164b3 n/a (chromium)
                                         #9  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #10 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15286:
                                         #0  0x000055dd3ac3e18b n/a (chromium)
                                         #1  0x000055dd3c0a4645 n/a (chromium)
                                         #2  0x000055dd3c0ac9e5 n/a (chromium)
                                         #3  0x000055dd3bfcaa90 n/a (chromium)
                                         #4  0x000055dd3bf830be n/a (chromium)
                                         #5  0x000055dd3bf844c7 n/a (chromium)
                                         #6  0x000055dd3c0a378e n/a (chromium)
                                         #7  0x000055dd3bf80928 n/a (chromium)
                                         #8  0x000055dd3bf740a5 n/a (chromium)
                                         #9  0x000055dd3e930d1e n/a (chromium)
                                         #10 0x000055dd3e92fb8c n/a (chromium)
                                         #11 0x000055dd3e9121f4 n/a (chromium)
                                         #12 0x000055dd3e91195b n/a (chromium)
                                         #13 0x000055dd3e9116a5 n/a (chromium)
                                         #14 0x000055dd3c9a87f6 n/a (chromium)
                                         #15 0x000055dd3c9aa3ca n/a (chromium)
                                         #16 0x000055dd3c9a9760 n/a (chromium)
                                         #17 0x000055dd3bf3f7ad n/a (chromium)
                                         #18 0x000055dd3bee0335 n/a (chromium)
                                         #19 0x000055dd3bee0698 n/a (chromium)
                                         #20 0x000055dd3bee0aeb n/a (chromium)
                                         #21 0x000055dd3bee244a n/a (chromium)
                                         #22 0x00007f0bdc4c9e67 g_main_context_dispatch (libglib-2.0.so.0)
                                         #23 0x00007f0bdc4ca0d0 n/a (libglib-2.0.so.0)
                                         #24 0x00007f0bdc4ca17c g_main_context_iteration (libglib-2.0.so.0)
                                         #25 0x000055dd3bee2336 n/a (chromium)
                                         #26 0x000055dd3befce9e n/a (chromium)
                                         #27 0x000055dd3bdc57d8 n/a (chromium)
                                         #28 0x000055dd3b5ea283 n/a (chromium)
                                         #29 0x000055dd3b5ed24d n/a (chromium)
                                         #30 0x000055dd3b5e5e98 n/a (chromium)
                                         #31 0x000055dd3bbdb787 n/a (chromium)
                                         #32 0x000055dd3bbda4d0 n/a (chromium)
                                         #33 0x000055dd3ac1f46b ChromeMain (chromium)
                                         #34 0x00007f0bd4baa291 __libc_start_main (libc.so.6)
                                         #35 0x000055dd3ac1f31a _start (chromium)
                                         
                                         Stack trace of thread 15362:
                                         #0  0x00007f0bd4c72dd3 epoll_wait (libc.so.6)
                                         #1  0x000055dd3bf538c8 n/a (chromium)
                                         #2  0x000055dd3bf51421 n/a (chromium)
                                         #3  0x000055dd3bee2ab6 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3b5f4d25 n/a (chromium)
                                         #6  0x000055dd3b5f4eb8 n/a (chromium)
                                         #7  0x000055dd3bf1a57b n/a (chromium)
                                         #8  0x000055dd3bf164b3 n/a (chromium)
                                         #9  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #10 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15359:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf0b1a8 n/a (chromium)
                                         #2  0x000055dd3bf0b072 n/a (chromium)
                                         #3  0x000055dd3bee200f n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3b5f4ba5 n/a (chromium)
                                         #6  0x000055dd3b5f4e91 n/a (chromium)
                                         #7  0x000055dd3bf1a57b n/a (chromium)
                                         #8  0x000055dd3bf164b3 n/a (chromium)
                                         #9  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #10 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15360:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf0b1a8 n/a (chromium)
                                         #2  0x000055dd3bf0b072 n/a (chromium)
                                         #3  0x000055dd3bee200f n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3b5f4c25 n/a (chromium)
                                         #6  0x000055dd3b5f4e9e n/a (chromium)
                                         #7  0x000055dd3bf1a57b n/a (chromium)
                                         #8  0x000055dd3bf164b3 n/a (chromium)
                                         #9  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #10 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15361:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf0b19d n/a (chromium)
                                         #3  0x000055dd3bee2005 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3b5f4ca5 n/a (chromium)
                                         #6  0x000055dd3b5f4eab n/a (chromium)
                                         #7  0x000055dd3bf1a57b n/a (chromium)
                                         #8  0x000055dd3bf164b3 n/a (chromium)
                                         #9  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #10 0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15364:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3c7756f8 n/a (chromium)
                                         #2  0x000055dd3bf19c07 n/a (chromium)
                                         #3  0x000055dd3bf164b3 n/a (chromium)
                                         #4  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #5  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15383:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf0b19d n/a (chromium)
                                         #3  0x000055dd3bee2005 n/a (chromium)
                                         #4  0x000055dd3befce9e n/a (chromium)
                                         #5  0x000055dd3bf1a57b n/a (chromium)
                                         #6  0x000055dd3bf164b3 n/a (chromium)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15385:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf172e2 n/a (chromium)
                                         #3  0x000055dd3bf16b56 n/a (chromium)
                                         #4  0x000055dd3bf19c07 n/a (chromium)
                                         #5  0x000055dd3bf164b3 n/a (chromium)
                                         #6  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #7  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15386:
                                         #0  0x00007f0bdd0464b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf445f3 n/a (chromium)
                                         #2  0x000055dd3bf172e2 n/a (chromium)
                                         #3  0x000055dd3bf16b56 n/a (chromium)
                                         #4  0x000055dd3bf19c07 n/a (chromium)
                                         #5  0x000055dd3bf164b3 n/a (chromium)
                                         #6  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #7  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15448:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf1723a n/a (chromium)
                                         #2  0x000055dd3bf16b56 n/a (chromium)
                                         #3  0x000055dd3bf19c07 n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15584:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf1723a n/a (chromium)
                                         #2  0x000055dd3bf16b56 n/a (chromium)
                                         #3  0x000055dd3bf19c07 n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 15652:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf1723a n/a (chromium)
                                         #2  0x000055dd3bf16b56 n/a (chromium)
                                         #3  0x000055dd3bf19c07 n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16019:
                                         #0  0x00007f0bdd04610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055dd3bf1723a n/a (chromium)
                                         #2  0x000055dd3bf16b56 n/a (chromium)
                                         #3  0x000055dd3bf19c07 n/a (chromium)
                                         #4  0x000055dd3bf164b3 n/a (chromium)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16175:
                                         #0  0x00007f0bd4c6948d poll (libc.so.6)
                                         #1  0x00007f0bdc4ca066 n/a (libglib-2.0.so.0)
                                         #2  0x00007f0bdc4ca17c g_main_context_iteration (libglib-2.0.so.0)
                                         #3  0x00007f0bdc4ca1c1 n/a (libglib-2.0.so.0)
                                         #4  0x00007f0bdc4f0345 n/a (libglib-2.0.so.0)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16176:
                                         #0  0x00007f0bd4c6948d poll (libc.so.6)
                                         #1  0x00007f0bdc4ca066 n/a (libglib-2.0.so.0)
                                         #2  0x00007f0bdc4ca3f2 g_main_loop_run (libglib-2.0.so.0)
                                         #3  0x00007f0bd93df7c6 n/a (libgio-2.0.so.0)
                                         #4  0x00007f0bdc4f0345 n/a (libglib-2.0.so.0)
                                         #5  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #6  0x00007f0bd4c727df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16278:
                                         #0  0x00007f0bd4c6948d poll (libc.so.6)
                                         #1  0x00007f0bd66a40a0 poll_func (libpulse.so.0)
                                         #2  0x00007f0bd6694be0 pa_mainloop_poll (libpulse.so.0)
                                         #3  0x00007f0bd66952c1 pa_mainloop_iterate (libpulse.so.0)
                                         #4  0x00007f0bd6695390 pa_mainloop_run (libpulse.so.0)
                                         #5  0x00007f0bd66a3fd5 thread (libpulse.so.0)
                                         #6  0x00007f0bcd722da6 internal_thread_func (libpulsecommon-9.0.so)
                                         #7  0x00007f0bdd040454 start_thread (libpthread.so.0)
                                         #8  0x00007f0bd4c727df __clone (libc.so.6)


--------
same with -O2 and no -mtune ...
getting this too often... seems to be pulseaudio-git

Sep 05 18:19:54 systemd-coredump[25538]: Process 7928 (chromium) of user 1000 dumped core.
                                         
                                         Stack trace of thread 7979:
                                         #0  0x000055d2a6c8c6ee n/a (chromium)
                                         #1  0x00007f804925a5ef context_get_server_info_callback (libpulse.so.0)
                                         #2  0x00007f80402dbf3d run_action (libpulsecommon-9.0.so)
                                         #3  0x00007f804926601a pa_mainloop_dispatch (libpulse.so.0)
                                         #4  0x00007f80492662cf pa_mainloop_iterate (libpulse.so.0)
                                         #5  0x00007f8049266390 pa_mainloop_run (libpulse.so.0)
                                         #6  0x00007f8049274fd5 thread (libpulse.so.0)
                                         #7  0x00007f80402f3da6 internal_thread_func (libpulsecommon-9.0.so)
                                         #8  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #9  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 7963:
                                         #0  0x00007f8047843dd3 epoll_wait (libc.so.6)
                                         #1  0x000055d2a7e033c8 n/a (chromium)
                                         #2  0x000055d2a7e00f21 n/a (chromium)
                                         #3  0x000055d2a7d925ce n/a (chromium)
                                         #4  0x000055d2a7dac99e n/a (chromium)
                                         #5  0x000055d2a7dca07b n/a (chromium)
                                         #6  0x000055d2a7dc5fb3 n/a (chromium)
                                         #7  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #8  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 7962:
                                         #0  0x00007f804fc19afb waitpid (libpthread.so.0)
                                         #1  0x000055d2a7da6a9d n/a (chromium)
                                         #2  0x000055d2a7dc5fb3 n/a (chromium)
                                         #3  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #4  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 7978:
                                         #0  0x00007f80402f349d pa_thread_is_running (libpulsecommon-9.0.so)
                                         #1  0x00007f80492757bd pa_threaded_mainloop_wait (libpulse.so.0)
                                         #2  0x000055d2a6c8c5f8 n/a (chromium)
                                         #3  0x000055d2a6c8a2e9 n/a (chromium)
                                         #4  0x000055d2a6c7cf5a n/a (chromium)
                                         #5  0x000055d2a76877a5 n/a (chromium)
                                         #6  0x000055d2a768884e n/a (chromium)
                                         #7  0x000055d2a768890f n/a (chromium)
                                         #8  0x000055d2a7dc60e3 n/a (chromium)
                                         #9  0x000055d2a7def2ad n/a (chromium)
                                         #10 0x000055d2a7d8fe35 n/a (chromium)
                                         #11 0x000055d2a7d90198 n/a (chromium)
                                         #12 0x000055d2a7d905eb n/a (chromium)
                                         #13 0x000055d2a7d91b2a n/a (chromium)
                                         #14 0x000055d2a7dac99e n/a (chromium)
                                         #15 0x000055d2a7dca07b n/a (chromium)
                                         #16 0x000055d2a7dc5fb3 n/a (chromium)
                                         #17 0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #18 0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 7928:
                                         #0  0x00007f804fc1168d pthread_join (libpthread.so.0)
                                         #1  0x000055d2a7dc5de8 n/a (chromium)
                                         #2  0x000055d2a7dc9a33 n/a (chromium)
                                         #3  0x000055d2a7dc9ae9 n/a (chromium)
                                         #4  0x000055d2a749f49c n/a (chromium)
                                         #5  0x000055d2a749f769 n/a (chromium)
                                         #6  0x000055d2a74a66a0 n/a (chromium)
                                         #7  0x000055d2a749f133 n/a (chromium)
                                         #8  0x000055d2a7a8b687 n/a (chromium)
                                         #9  0x000055d2a7a8a3d0 n/a (chromium)
                                         #10 0x000055d2a6ad21ab ChromeMain (chromium)
                                         #11 0x00007f804777b291 __libc_start_main (libc.so.6)
                                         #12 0x000055d2a6ad205a _start (chromium)
                                         
                                         Stack trace of thread 7965:
                                         #0  0x00007f804fc191cd read (libpthread.so.0)
                                         #1  0x000055d2a7c4267f n/a (chromium)
                                         #2  0x000055d2a7dc5fb3 n/a (chromium)
                                         #3  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #4  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 8763:
                                         #0  0x00007f804fc1610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7dc6d3a n/a (chromium)
                                         #2  0x000055d2a7dc6656 n/a (chromium)
                                         #3  0x000055d2a7dc9707 n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16317:
                                         #0  0x00007f804fc1610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7dc6d3a n/a (chromium)
                                         #2  0x000055d2a7dc6656 n/a (chromium)
                                         #3  0x000055d2a7dc9707 n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 25479:
                                         #0  0x00007f804fc164b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7df40f3 n/a (chromium)
                                         #2  0x000055d2a7dcc2cf n/a (chromium)
                                         #3  0x000055d2a7dc5fb3 n/a (chromium)
                                         #4  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #5  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 16318:
                                         #0  0x00007f804fc1610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7dc6d3a n/a (chromium)
                                         #2  0x000055d2a7dc6656 n/a (chromium)
                                         #3  0x000055d2a7dc9707 n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 10826:
                                         #0  0x00007f804783a48d poll (libc.so.6)
                                         #1  0x00007f804f09a066 n/a (libglib-2.0.so.0)
                                         #2  0x00007f804f09a3f2 g_main_loop_run (libglib-2.0.so.0)
                                         #3  0x00007f804bfaf7c6 n/a (libgio-2.0.so.0)
                                         #4  0x00007f804f0c0345 n/a (libglib-2.0.so.0)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 22172:
                                         #0  0x00007f804fc164b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7df40f3 n/a (chromium)
                                         #2  0x000055d2a7dccd8d n/a (chromium)
                                         #3  0x000055d2a7dcd18b n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 20902:
                                         #0  0x00007f804fc164b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7df40f3 n/a (chromium)
                                         #2  0x000055d2a7dccd8d n/a (chromium)
                                         #3  0x000055d2a7dcd18b n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 10825:
                                         #0  0x00007f804783a48d poll (libc.so.6)
                                         #1  0x00007f804f09a066 n/a (libglib-2.0.so.0)
                                         #2  0x00007f804f09a17c g_main_context_iteration (libglib-2.0.so.0)
                                         #3  0x00007f804f09a1c1 n/a (libglib-2.0.so.0)
                                         #4  0x00007f804f0c0345 n/a (libglib-2.0.so.0)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 22881:
                                         #0  0x00007f804fc1610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7dc6d3a n/a (chromium)
                                         #2  0x000055d2a7dc6656 n/a (chromium)
                                         #3  0x000055d2a7dc9707 n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 22538:
                                         #0  0x00007f804fc1610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a896d648 n/a (chromium)
                                         #2  0x000055d2a896d546 n/a (chromium)
                                         #3  0x000055d2a896e6fb n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 8454:
                                         #0  0x00007f804fc1610f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                         #1  0x000055d2a7dc6d3a n/a (chromium)
                                         #2  0x000055d2a7dc6656 n/a (chromium)
                                         #3  0x000055d2a7dc9707 n/a (chromium)
                                         #4  0x000055d2a7dc5fb3 n/a (chromium)
                                         #5  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #6  0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 7966:
                                         #0  0x00007f804783c0b3 __select (libc.so.6)
                                         #1  0x000055d2a7d7f302 n/a (chromium)
                                         #2  0x000055d2a7def2ad n/a (chromium)
                                         #3  0x000055d2a7d8fe35 n/a (chromium)
                                         #4  0x000055d2a7d90198 n/a (chromium)
                                         #5  0x000055d2a7d905eb n/a (chromium)
                                         #6  0x000055d2a7d91a8b n/a (chromium)
                                         #7  0x000055d2a7dac99e n/a (chromium)
                                         #8  0x000055d2a7dca07b n/a (chromium)
                                         #9  0x000055d2a7dc5fb3 n/a (chromium)
                                         #10 0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #11 0x00007f80478437df __clone (libc.so.6)
                                         
                                         Stack trace of thread 7943:
                                         #0  0x00007f804783a48d poll (libc.so.6)
                                         #1  0x000055d2a76d4722 n/a (chromium)
                                         #2  0x000055d2a7dc9707 n/a (chromium)
                                         #3  0x000055d2a7dc5fb3 n/a (chromium)
                                         #4  0x00007f804fc10454 start_thread (libpthread.so.0)
                                         #5  0x00007f80478437df __clone (libc.so.6)


-------
coredump in pulse? (recompiling it with normal flags: -O2 and no -mtune=native)

Sep 02 04:04:30 systemd-coredump[4210]: Process 3724 (chromium) of user 1000 dumped core.
                                        
                                        Stack trace of thread 3747:
                                        #0  0x000055b778ba65ee n/a (chromium)
                                        #1  0x00007ff7d3616fff context_get_server_info_callback (libpulse.so.0)
                                        #2  0x00007ff7ca699f90 run_action (libpulsecommon-9.0.so)
                                        #3  0x00007ff7d362285e dispatch_timeout (libpulse.so.0)
                                        #4  0x00007ff7d3622b0f pa_mainloop_iterate (libpulse.so.0)
                                        #5  0x00007ff7d3622bc0 pa_mainloop_run (libpulse.so.0)
                                        #6  0x00007ff7d3631565 thread (libpulse.so.0)
                                        #7  0x00007ff7ca6b1607 internal_thread_func (libpulsecommon-9.0.so)
                                        #8  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #9  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3746:
                                        #0  0x00007ff7d9fd2250 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x00007ff7d3631c8b pa_threaded_mainloop_wait (libpulse.so.0)
                                        #2  0x000055b778ba64f8 n/a (chromium)
                                        #3  0x000055b778ba41e9 n/a (chromium)
                                        #4  0x000055b778b966a7 n/a (chromium)
                                        #5  0x000055b778b97aaa n/a (chromium)
                                        #6  0x000055b779d8ff2d n/a (chromium)
                                        #7  0x000055b779d289f7 n/a (chromium)
                                        #8  0x000055b779d28e08 n/a (chromium)
                                        #9  0x000055b779d2930b n/a (chromium)
                                        #10 0x000055b779d2a36a n/a (chromium)
                                        #11 0x000055b779d46815 n/a (chromium)
                                        #12 0x000055b779d691eb n/a (chromium)
                                        #13 0x000055b779d64e83 n/a (chromium)
                                        #14 0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #15 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3730:
                                        #0  0x00007ff7d9fd5afb waitpid (libpthread.so.0)
                                        #1  0x000055b779d407ed n/a (chromium)
                                        #2  0x000055b779d64e83 n/a (chromium)
                                        #3  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #4  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3731:
                                        #0  0x00007ff7d1c00dd3 epoll_wait (libc.so.6)
                                        #1  0x000055b779da48a8 n/a (chromium)
                                        #2  0x000055b779da23b1 n/a (chromium)
                                        #3  0x000055b779d2ae7e n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3732:
                                        #0  0x00007ff7d1c00dd3 epoll_wait (libc.so.6)
                                        #1  0x000055b779da48a8 n/a (chromium)
                                        #2  0x000055b779da23b1 n/a (chromium)
                                        #3  0x000055b779d2ae7e n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3733:
                                        #0  0x00007ff7d1bf90b3 __select (libc.so.6)
                                        #1  0x000055b779d17222 n/a (chromium)
                                        #2  0x000055b779d8ff2d n/a (chromium)
                                        #3  0x000055b779d289f7 n/a (chromium)
                                        #4  0x000055b779d28e08 n/a (chromium)
                                        #5  0x000055b779d2930b n/a (chromium)
                                        #6  0x000055b779d2a2cb n/a (chromium)
                                        #7  0x000055b779d46815 n/a (chromium)
                                        #8  0x000055b779d691eb n/a (chromium)
                                        #9  0x000055b779d64e83 n/a (chromium)
                                        #10 0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #11 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3734:
                                        #0  0x00007ff7d9fd51cd read (libpthread.so.0)
                                        #1  0x000055b779bc596f n/a (chromium)
                                        #2  0x000055b779d64e83 n/a (chromium)
                                        #3  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #4  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3735:
                                        #0  0x00007ff7d9fd24b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d95123 n/a (chromium)
                                        #2  0x000055b779d6bf6d n/a (chromium)
                                        #3  0x000055b779d6c36b n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3736:
                                        #0  0x00007ff7d9fd24b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d95123 n/a (chromium)
                                        #2  0x000055b779d6bf6d n/a (chromium)
                                        #3  0x000055b779d6c36b n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3737:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d65c28 n/a (chromium)
                                        #2  0x000055b779d65566 n/a (chromium)
                                        #3  0x000055b779d68877 n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3738:
                                        #0  0x00007ff7d9fd24b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d95123 n/a (chromium)
                                        #2  0x000055b779d56908 n/a (chromium)
                                        #3  0x000055b779d2a345 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b77940aca5 n/a (chromium)
                                        #6  0x000055b77940b071 n/a (chromium)
                                        #7  0x000055b779d691eb n/a (chromium)
                                        #8  0x000055b779d64e83 n/a (chromium)
                                        #9  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #10 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3740:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d56938 n/a (chromium)
                                        #2  0x000055b779d56712 n/a (chromium)
                                        #3  0x000055b779d2a34f n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b77940ada5 n/a (chromium)
                                        #6  0x000055b77940b091 n/a (chromium)
                                        #7  0x000055b779d691eb n/a (chromium)
                                        #8  0x000055b779d64e83 n/a (chromium)
                                        #9  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #10 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3739:
                                        #0  0x00007ff7d1c00dd3 epoll_wait (libc.so.6)
                                        #1  0x000055b779da48a8 n/a (chromium)
                                        #2  0x000055b779da23b1 n/a (chromium)
                                        #3  0x000055b779d2ae66 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b77940ad25 n/a (chromium)
                                        #6  0x000055b77940b081 n/a (chromium)
                                        #7  0x000055b779d691eb n/a (chromium)
                                        #8  0x000055b779d64e83 n/a (chromium)
                                        #9  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #10 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3741:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d56938 n/a (chromium)
                                        #2  0x000055b779d56712 n/a (chromium)
                                        #3  0x000055b779d2a34f n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b77940ae25 n/a (chromium)
                                        #6  0x000055b77940b09e n/a (chromium)
                                        #7  0x000055b779d691eb n/a (chromium)
                                        #8  0x000055b779d64e83 n/a (chromium)
                                        #9  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #10 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3725:
                                        #0  0x00007ff7d1bf748d poll (libc.so.6)
                                        #1  0x000055b77963ba52 n/a (chromium)
                                        #2  0x000055b779d68877 n/a (chromium)
                                        #3  0x000055b779d64e83 n/a (chromium)
                                        #4  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #5  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3742:
                                        #0  0x00007ff7d9fd24b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d95123 n/a (chromium)
                                        #2  0x000055b779d56908 n/a (chromium)
                                        #3  0x000055b779d2a345 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b77940aea5 n/a (chromium)
                                        #6  0x000055b77940b0ab n/a (chromium)
                                        #7  0x000055b779d691eb n/a (chromium)
                                        #8  0x000055b779d64e83 n/a (chromium)
                                        #9  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #10 0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3745:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b77a6257b8 n/a (chromium)
                                        #2  0x000055b779d68877 n/a (chromium)
                                        #3  0x000055b779d64e83 n/a (chromium)
                                        #4  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #5  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3748:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d56938 n/a (chromium)
                                        #2  0x000055b779d56712 n/a (chromium)
                                        #3  0x000055b779d2a34f n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3744:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d56938 n/a (chromium)
                                        #2  0x000055b779d56712 n/a (chromium)
                                        #3  0x000055b779d2a34f n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3762:
                                        #0  0x00007ff7d9fd24b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d95123 n/a (chromium)
                                        #2  0x000055b779d56908 n/a (chromium)
                                        #3  0x000055b779d2a345 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3724:
                                        #0  0x00007ff7d1bf748d poll (libc.so.6)
                                        #1  0x00007ff7d9456066 n/a (libglib-2.0.so.0)
                                        #2  0x00007ff7d945617c g_main_context_iteration (libglib-2.0.so.0)
                                        #3  0x000055b779d2a6b6 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779bf9ef8 n/a (chromium)
                                        #6  0x000055b7794003b3 n/a (chromium)
                                        #7  0x000055b77940337d n/a (chromium)
                                        #8  0x000055b7793fc058 n/a (chromium)
                                        #9  0x000055b7799fc447 n/a (chromium)
                                        #10 0x000055b7799fb0f0 n/a (chromium)
                                        #11 0x000055b7789e74ab ChromeMain (chromium)
                                        #12 0x00007ff7d1b38291 __libc_start_main (libc.so.6)
                                        #13 0x000055b7789e735a _start (chromium)
                                        
                                        Stack trace of thread 3768:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d56938 n/a (chromium)
                                        #2  0x000055b779d56712 n/a (chromium)
                                        #3  0x000055b779d2a34f n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3806:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d56938 n/a (chromium)
                                        #2  0x000055b779d56712 n/a (chromium)
                                        #3  0x000055b779d2a34f n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3881:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d65c28 n/a (chromium)
                                        #2  0x000055b779d65566 n/a (chromium)
                                        #3  0x000055b779d68877 n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3880:
                                        #0  0x00007ff7d9fd24b8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d95123 n/a (chromium)
                                        #2  0x000055b779d6bf6d n/a (chromium)
                                        #3  0x000055b779d6c36b n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3958:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d65c28 n/a (chromium)
                                        #2  0x000055b779d65566 n/a (chromium)
                                        #3  0x000055b779d68877 n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3765:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d65c28 n/a (chromium)
                                        #2  0x000055b779d65566 n/a (chromium)
                                        #3  0x000055b779d68877 n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 4013:
                                        #0  0x00007ff7d1c00dd3 epoll_wait (libc.so.6)
                                        #1  0x000055b779da48a8 n/a (chromium)
                                        #2  0x000055b779da23b1 n/a (chromium)
                                        #3  0x000055b779d2ae66 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b779d691eb n/a (chromium)
                                        #6  0x000055b779d64e83 n/a (chromium)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3763:
                                        #0  0x00007ff7d9fd210f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
                                        #1  0x000055b779d65c28 n/a (chromium)
                                        #2  0x000055b779d65566 n/a (chromium)
                                        #3  0x000055b779d68877 n/a (chromium)
                                        #4  0x000055b779d64e83 n/a (chromium)
                                        #5  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #6  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 4153:
                                        #0  0x00007ff7d1bf748d poll (libc.so.6)
                                        #1  0x00007ff7d3631620 poll (libpulse.so.0)
                                        #2  0x00007ff7d3622430 pa_mainloop_poll (libpulse.so.0)
                                        #3  0x00007ff7d3622b01 pa_mainloop_iterate (libpulse.so.0)
                                        #4  0x00007ff7d3622bc0 pa_mainloop_run (libpulse.so.0)
                                        #5  0x00007ff7d3631565 thread (libpulse.so.0)
                                        #6  0x00007ff7ca6b1607 internal_thread_func (libpulsecommon-9.0.so)
                                        #7  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #8  0x00007ff7d1c007df __clone (libc.so.6)
                                        
                                        Stack trace of thread 3743:
                                        #0  0x00007ff7d1c00dd3 epoll_wait (libc.so.6)
                                        #1  0x000055b779da48a8 n/a (chromium)
                                        #2  0x000055b779da23b1 n/a (chromium)
                                        #3  0x000055b779d2ae66 n/a (chromium)
                                        #4  0x000055b779d46815 n/a (chromium)
                                        #5  0x000055b77940af25 n/a (chromium)
                                        #6  0x000055b77940b0b8 n/a (chromium)
                                        #7  0x000055b779d691eb n/a (chromium)
                                        #8  0x000055b779d64e83 n/a (chromium)
                                        #9  0x00007ff7d9fcc454 start_thread (libpthread.so.0)
                                        #10 0x00007ff7d1c007df __clone (libc.so.6)

